#!/bin/bash
cd ~/Dropbox/Apps/Blot/Posts

# Get current date/time
today=$(date +"%Y%m%d%H%M")

# Set output file
fn=../Pages/page-tag-cloud.md

# Ensure correct line-endings
for filename in *.md; do
	if grep -rq $'\r' "$filename"; then
		content=$(tr -d '\015' < $filename)
		echo "$content" > $filename
	fi
done

# Get tags from only the non-scheduled posts
tags=""
for filename in *.md; do
	postdate=$(grep "^Date:" $filename | sed 's/Date:[ ]*//' | tr -d ' :-')'000000000000'
    postdate=${postdate:0:12}

    if [[ "$postdate" -le "$today" ]]; then
    	tags="$tags"$'\n'$(cat $filename | grep "^Tags:" | sed 's/Tags:[ ]*//' | awk -F ', ' '{for(i=1;i<=NF;i++){print $i}}')
    fi
done

# Sort and count unique tags
tags=$(echo "$tags" | sed '/^$/d' | sort -f | uniq -c)

# Create header for the page
echo "Title: Tags" > $fn
echo "Page: yes" >> $fn
echo "Permalink: page-tags" >> $fn
echo "Date: "`date +"%Y-%m-%d %H:%M"` >> $fn

# Output intro text
echo "" >> $fn
echo "# Tag cloud" >> $fn
echo "" >> $fn
echo "This pages serves as a replacement for a tag cloud. This page is generated using a shell script. " >> $fn
echo "This page is inspired on the [following post][1]." >> $fn
echo "" >> $fn

# Output the tags
echo "<div class=\"floatlist\"><ul>" >> $fn
echo "$tags" | awk '{print "<li><a href=\"http://sharedmemorydump.net/tagged/" tolower($2) "\">"$2"</a> <span class=\"badge\">"$1"</span></li>"}' >> $fn
echo "</ul></div>" >> $fn

# Add the URL(s)
echo "" >> $fn
echo "[1]: http://blog.hejki.org/post/102115323478/scriptogram-seznam-tagů" >> $fn

cd ..